All High School Biology Resources
Example Questions
Example Question #41 : Cell Division
What is the final stage of meiosis?
Anaphase II
Metaphase II
Prophase II
Telophase II
Telophase II
Telophase is the final stage of both meiosis I and meiosis II. So telophase II is the final step of the overall process of meiosis. In telophase II, the daughter cells begin to form, the DNA begins to decondense, the nuclear membrane reforms, and the spindle apparatus breaks down. Cytokinesis is the physical splitting of the cell that follows mitosis/meiosis.
Example Question #12 : Meiosis
During which phase of meiosis does chromosomal disjunction occur?
Telophase I
Anaphase I
Metaphase I
Cytokinesis
Anaphase I
Chromosome disjunction is the splitting up of paired of chromosomes. This occurs in anaphase I and anaphase II where the homologous chromosomes split and the sister chromatids split, respectively. Note that improper disjunction (nondisjunction) can be detrimental to the cell.
Example Question #42 : Cell Division
Which of the following best describes the reason for the genetic diversity of gametes?
Crossing Over
None of these
All of these
Independent assortment
Crossing Over
Crossing over is the process in Meiosis I in which homologs line up on the metaphase plate and exchange genetic information, which changes the genetic make up of chromosomes. Independent assortment is a principle proposed by Gregory Mendel stating that genes assort independently during gamete formation, which creates genetic diversity.